Type-writer platen-roll-shifting means.



E. 0mm. TYPE WRITER PLATEN ROLL SHIFTING MEANS.

APPLICATION FILED OCT. 14. I915.

1,252,41 h PatentedJan. 8,1918.

, 3 SHEETB-BHBETI Edward 171411.214

' Patented Janis, 191's;

I .5. .L. oumv. TYPE WRITI:R PLATEN ROLL SHIFTING MEANS. APPLIICATION FILED OCT. F4. 19l6.

Show

, 7A n fill/Willi? 0 Patentd Jan. 8,1918.

. 3 TESTS-SHEET 3 IIIIIIIIIIIIII N" N U D L M L nnwann- L. mum, orrnn UNITED s'ra'rns manna-n qonrs.

To on whom it may concern;

Be it known that I, EDWARD L. DUNN, a citizen oft-he United States, and a 'member'oi the-United States Marine Corps, have view taken through the "shifting mechanism,

1 Fig. 3 is asectionqon the line 3-3 of invented certain new and useful Improvementsqm a Type-Writer PlatenfRoll-Shifting Means of which thefollowing is a specification. v

This invention relates to typewriter shifting mechanism, and ni'ore. articularly to means adapted to beattache to the platen roller of atypewriter for shiftingthe seine: One of the main objects .ofvthe invention is to provide a mechanism of simple construction andoperation which can-bequickly and easily attached to the platen roller of a typewriter of: standard construction. A .further object is to proixide a mechanism which'can be' adjusted so as to 'va'ry the spacing or column at the left-hand side" of the sheet which is being written upon.

. A still further object is top'rovide'a mechanism oi the character described in which the spacing may be adjustedas desired. 25

Further objects willappea'r from the detail description.

In the drawingsi Figure-1 is aside front view of the inveli- 5 tion as applied, i

Fig. 2 is a longitudinal vertical sectional Fig. 4: is a section on the line H of Fig, 1,? r

Fig. 5 os a section on the line 5-"5"0f Fi i1 v ig. 6. 'isa detail perspective view of the "latohhead, Ignit ng the longitudinal movementof the 's ifting rod,

Fig. 7 is a detail of the adjusting rod for i I -Fig.8 is a front view of the reelca'sing,

view through thereel an d ,"Fig. ll-isa transverse section through the peel shaft. v Th -numeral Fig. 9 isa section on the line 9-9 of ig-'8, H Fig. 10 is a transverse vertical sectional the reel casing,

rack banand the guide casingthereifor, and "Fig; 1 2-isi-a'detailof the mountingof the i 1 designates the platen roller om typewriter which ismeuntedg on a car- :riage slidahle on the" typewrit r frame, .in

flieq'usual manner. Thls roller is mounted which is providedat each enn- Specifieetion of Letters l'atent. Applieatio'nflled October, 1916. Serial l lo. 125,659.

TYPE-warren PLATEN-ROLL-SHIFTING MEANS.

PatentedJhn. s; 1913.

with the usual hand-knobs sec'iired. thereto.

In applying my invention, I mount anadjusting rod 4 in'longitudinalalinerhent with the shaft 2 of the p aten roller. =On.the inner end of this rodissecured' aydisk 5which 1s mounted in arecess. 6 in a slidableblock 7. A sleeve 8 .is secured about the block" 7 and releasably fastenedto the hand-knob 3 by -means of set-screws 9 threaded through into a series of recesses'ornotchejs 13 in the outer face of the block 7. Thesenqtches are arranged concentric with; the shifting rod and are so beveled or inclined that the. front tapered end of the latch-head 11- will enr gage therewith so as to cause otation" of the .block 7 in the direction 'indijea ed by the ar- 1 of the drawings, when; the' row in Fig. shifting rod notches "are is rotated. Th' bottom of these inclined upwardly in. the direction o posite to that in which the block is rotate and the beveledsurface 11" of, the inner beveled end hf the latch-head is similarly inclinedl By this construction, the

shaft i-is free torotatein onedirection m.--

v for the end of thershifting rod and permits easy rotation of the same.

Thislatch-head has its L outer end' beve'1ed and is adapted to. engage the sleeve and into recesses in the knob. A"

guide'head 15 is. nted on the. ski

justing rod e beyond the disk 10. Arspringpressed deten-t 16 is mounted in a recess 1n the inner end of-this guide-head andis'h eld in depressed position by a coil-sfrlng 17 mounted about theshank '18 form'e integral -w'ith the detentw This; shank flpr'ojects annular shoulder 19- integrally through an I connected withthe' head and-. is provided, 0

itsupp'er' end with a gripping head 20; this means the detent may heeasily lifted in t0 inoperative position sons to disconnect the head from the rod.: The detentlfi en- .gages with a seriespf rectangli lar vinetal and is rigidly- 21, formed in the am part of the ma 4.

By means of the head 15 and the recesses '21 thehead 15 may be in-longitudinalg adjustment on thfitshiftingrod.

upright 22 is adapted to be secured to a typewritr tahle 23 by --means of a clamp 24,- or in anygibther suitable manner.

ThlS

circu an ids-casing. 25 atits upper end.

guld'e-casin shifting rod 4. tatably 'mounted on" a-'-transverse shaft 27 'secured across the guide-casing 25 near its lower end. This pulley 'i's adaptedto receive the rod 4. A bracket'28 is secured-to 'a cover 29j'secured over" he'outer sidexof the [upright 22 and'casing 25. This bracket is }formed with an integral concaved crossfbar .30 at its lower end adaptedto' fit snugly about the'upper portion of the rod 4, so as to confine the rod between the same and the pulley 26,, By. this-means the shifting rod held in proper adjustment so as to be easily movable axially:

The guide-casing is p ovided in its inner face with a'plurality of spaced proxihelical grooves 31.' The inner end of each groove -"s'.fiare'd as at '31, so as to readily receive the tapered outer end of a corresponding rib 32 projecting from .the periphery of "the guide-head 15 and formed integral therewith. These grooves and ribs are related that when the'head' is moved into the casing, the moves will cause the 35 head to be rotated downwardly andrearmately wardly so as to rotate the rod 4,.and con-J s'equently .the' plat'enfroller' l'in the usual direction so aS' to move the paper inthe t pewriter up the distance of one space. bviously,

the guide:hea d is moved into the casing, the

' amount oif rotation-of the shifting rod, and consequently the'spacing, may be adjusted.

The pulley 26 is provided with a second 45 ;smaller groove 33, This small groove is adapted to receive ac'able, 34, the upper-end of which is secured to the outer face of the ids-head 15,-near thei'center thereof, as at 35. The cable 34 passes over a second pulle 36 rotatably supported between the arms 3 projecting downwardly from the cover 29, and is wound about. a drum or reel 38 which is ke ed on a 'shaft '39 rotatablv mounted on ball-hoe p 40 in the side walls of the sheet 56 metal reel casing 41. (A pinio'n42 is keyedon, the, shaft. 39 adjacent the reel 38- and "with a rack-bar 43. This rack-bar we the inwardly directed U-guide meml' Thisca'sing 5'is'form of sheet per section 41 oi the reel casing 41 parallel- ;withand ad'acent 'heiinner face of the reel 66 38. The har 431s provided atits lower 15 concentric with the. groovedpulley-26 is rostandard '22. These arms by varying :the' distance which.

.of the notches 50, thus loc of the guide-head 15.

the left-hand si e of the s which is being 2 7 When the limiting rod 49in adjusted, it 120 provided wi th lateral grooves which reis 44 .iormedinte'gral with the ide-cassecured through the up-Z end, with afl-iectangularly disposed pedal 48 which rdjectQL'thrOugh a vertical slot 4'1 formed in the "front of the casing'iL. By. depressing the rack-bar 43 by means of the pedal 46, the reelfidwill-be rotated as to' 10 fwind the bable 34. thereon, thus moving the s v uiderhead 15 into up ht. is projvlded with an approximately nientsxinounted therein are a tionof. the cable reel 38. J a

By limiting the longitudinal or. aXial'- lmovement of the shifting rod 4, the space or column at the. left-hand .side of the sheet being written upon may .be varied. For;this

purposea graduated limiting rod 49 is 511d ably mounted through the upright 22, adjacent. the guideecasing, 25. Thisrod is pro- .vided. with a plurality of equall ed notches'50. These notches are a apt receive inwardly projecting arms 51 formed '95 I integral with a spring 52 secured, to theengage into two' of the recesses 50 'so as to secure the limiting rod in longitudinal adjustment. \Vhen it is desired a) adjust the rod, it is only n'ecm5- es sary toturn, it through a half rotation so as to present thesmooth side of the rod to the inner ends of the arms 51.- For this p'urpose the rod isprovided on its outer end with a knurled head 53. By turning the ted 1115 as described, it may: be adjusted longitudiv 1 nally, after which it is turned back so asto bring the arms-51 into engag'gmenthwitlgdtwo 'ng t e r 1 in adjustment.

theouter face of the annular shoulder 19 Bythis means the axial movement of the: shifting rod 4, and

consequently ofthe platen; roller, may be 1115:-

This provides simple' and eflicient means for varyin the spacings? column at t of paper varied.

written upon;

is alsoneeessary to adjust the uide-head 15 so asnot to vary the linespacing. For this purpose the recesses 21 of the sh1ftingrod4 and the notches 50' of the limiting rod 49 are nqtgnoved inward a corresponding distance, .t is w b than for the 1 80 v 11o The rod 49 is so positioned as to'engage adjustmit .shownin this figure. By m i -suiagc e ing the limitingrod out one space, the. outward movement of the shifting rod 4,.,and

consequently the'head would be increased.

a corresponding distance, so that the head would move a greater distance into :the 'guide casing' 2'5 and would, as a result, be rotated through a grbater distance. By adjustin'g the headone space to the left for every space that the. limiting rod-l9 is adjustedto the right, and vice versa the dis tance which the head will be moved into the guide-casing will remainconstant so as not'to vary the line spacing. On the other hand, by varying the adjustment of the head relatively to. the limiting. rodthe distance which the head will. move into the guidecasing may bevariedas'to varythe' line spacing as desired. V

When it is desired to vary -theamount of cable. which is wound uponthe reel 38, so; as

totakeup slacltor for any other-reason, the

top :41 of the casing 41 is removed for this purpose. The to 41' and the body of the casing are p'rovic ed with outwardly directed flanges 41" provided. with alined perforations adapted to receive securing screws 53L By removing. these'screws the top 41 may be lifted vertically so .as to remove the guide-casing 45 from about the rack-bar 43.

hispermits the rack-bar to be moved out w of engagement with thepinion 42 so that the reel 38, may be rotated so as desired amount of cable onto the reel, after whichthe rack-bar ismoved into engage ment with the pinion and thetop 41 and guide-casing 45 are again securedin po-' sition.

The guidehead 15, after it has 'been 'moved into the guide-casing 25 will be moved out of the casing as theshifting. rod

4: is moved longitudinally in accordance with the longitudinal movement of the platen roller -carriage which will be moved along the ty'pe-Writerframe during the operation. of the typewriter .in the usual manner;-

When the typewriter carriage is moved to its extreme position at the left-hand side ofthe machine the head ,15 will be in its initial position relatively to the guide-casing 25. By pressing on the pedal 6L6 the .rod 4 and guide'head 15 together with the platen roller and the typewriter carriage, will be again shifted -to the extreme right-hand po sition, and the platen roller will be simultaneously rotated so asto move the sheet or paper up one space, This operation Will be repeated after each-line which istypewritten upon the "machine.

movement of the shiftingrod i, the rod .will

rot-ate "freely -and independently of theplaten roller, as previously described.

I have described my mechanism as used in connectionwith a'typew'riter of standard "scribed the combination of a ti) wind the J direction.

=cured to the rolle'rand being sheet of paper in. the typevvriting .Ofcourse, during the inward construction in wh ich key-board of the typewritin machine is when changing from numerals, or the like. "However," it will be evident that certain other variations may be. 'made in the construction and arrangement of the: various parts of my invention witho'ut departing from the fieldgand scope of the rst ease to secondcase letterso'r" same and I intend to include all such variations. as fall withinthe scope of the append ed claims of this application in which a preferred form only of my invention is disj" closed. i

What I claim is: I a 1. In .a mechanism of :the character dc? laten roller, av longitudinally movable shif ting rod secured to one end'of the roller so as to have free rotary movement in one direction, meansfor moving the rodlongltud'inally and for s multaneouslyrotat'ing it. and connec-. V

tions between the ii'od and the roller for rotating the rollerin one direction when the rod is rotated. i T 2. In a mechaliislnof the rr-haracterc' described, the combination of a platen roller, a longitudinally moi'a ble rod. secured' to, one endof saidroller so as' to be rotatable inde-l pendently thereofin one direotiom'm'eansfdr moving the rod longitudinally and for'ca'using rotation thereof, and connections bee tween the rod and the roller for rotating the rollerwhen theurodis rotated in the'other 3. In a mechanismof the character ides scribed, the combination of aplaten roller, a:

longitudinally movable 'rod secured in one end of said roller so as to be rotatabl independently thereof in one direction, cans .for moving the rod longitudinally and for causing. rotation thereof, connections be ,.tween the rod and the roller for rotating the roller when;the rod is rotated in the other direction, and means forpositively limiting the longitudinal movement of the rod 4. In a machine of the character described, the combination of aplaten roller, a longitudinally movable rod having one'end serotatable in:- dependently thereof in one direction, means for operatively connecting the rod to the roller duringits rotation in theother direction, and means for moving the rod longitudinally andfor simultaneously causing'ro tation of the rod. in a direction to rotate the honor the r'od in direction to rotate the; platen roller; and adjustable means for varyg. ing'the longitudinal movement of the 6. In a mechanism of thecharacter described, the combination of a platen roller, .a

gu de casing provided With helical guide;

2 grooves,- a rod slidably mounted through the casing in longitudinal alinement with the roller and having onef=,:.en d secured to the roller so as to be rotatable independently 1 thereof .in one direction, connectlons between the rod and the roller. for causing rotation of the roller when the rod is rotated in the other ,direction adapted. to permit free rotation of the rod in the first directlon, a headmounted on the rod and secured against rotary move ment relatively thereto,- said head being 'p'rovided with members adapted to engage the gro' oves in the casing so a Q causelrotation of the head'when the head 'lSIHOVBd into the casing, .andmeans for mov i ng' saidrod longitudinally through the casing.

7'. In a mechanism of the character described, the combination guide casing provided with helical guide vgrooves, a rod slidably mounted through. the

casing in longitudinal aline nent with the roller and havingone end secured thereto so as to be rotated independently of the roller in one'dire'ction, connections between the rod vihenthe rod is rotated in the other direction adapted'to permit free rotation of the rod in I the first direction, a head mounted on the rod of a'platen ro1ler, a

I in presence of two and roller for causing rotationof the roller amnesia and adjustable longitudinally of the same; said head being adaptedto fit'intothe guide casing and provided with members'adapted' to engage 'thegrooves thereof so'as to cause rotation, of the headwhe'n-it is moved intothecasing, and means for moving the said rod through the casing."

8. In a mechanism of character dc scribed, the eombinationof a platen roller, a

guide casing provided "with. helical casing in longitudinal alinement with the roller and having one end secured thereto sc asto be. rotatable independently of the roller 'in. one, direction, connections between the rodiand roller vfor causing rotation ofthe' roller when the rod isrotated in the other direction adapted to permit free rotation. of

"the rod in thefirst direction, ahead mounted onthe rod and adjustable longitudinally of, the same, said head beingadapted to fit intowthe guide casing and provided with members adapted to engage the grooves thereofso as to cause rotation of the head when it is' moved into the casing, means for moving the said rod through the casing, and adjustable means for positively limiting the outward movement of the head.

ide. grooves, a rod slidablv mounted throng the In testimonywhereof I afiiX my signature witnesses.

. v EDWARD ILDUNN.

lVitnesses: p

S'. GARDNER,

J. A. Frrzcnmm. 

